Safety-razor.



' c. MATSON.

SAFETY RAZOR.

APPLICATION FILED MAY 20, I916.

Patented Dec. 26, 1916.

. Z 5106111302. [/Va 50.21,

To all whom it may concern:

Be it known that I, CHARLES I. MATSON, a citizen of the United States, and a resident of the city of Chicago, county of Cook,

and State of Illinois, have invented certain new and useful Improvements in Safety- Razors, of which the following is a specification.

My invention relates to improvements in safety razors or clipping devices, and has for its object the production of a device of this character which is of simple construction, one which may be readily and easily operated, one which will be absolutely safe in use, and one which will be highly eflicient.

Other objects will appear hereinafter With these objects in view, the invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part ofthis specification, and in which,

Figure 1 is a longitudinal sectional view of a safety razor embodying the invention, Fig.2 is an end view thereof, Fig. 3 is a slightly enlarged side elevation of the rotary element of the device detached, Fig. 4 is a section taken on line H of Fig. 3, Figs. 5 and 6 are a front elevation and a side elevation respectively, of a closure plug provided at the outer end of the rotary cuttin element, and Figs. 7 and 8 are views 85 similar to Figs. 3 and 4 respectively, showing a slightly modified form of rotary cuttin element which may be employed.

f he preferred form ofconstruction, as illustrated in the drawings, comprises a tubular housing 1, the rearward end of which is secured by a set screw 2 in a tubular housing member 3, the latter, in turn, being secured, as by threading, to the forward end of a housing member 4:. The housing 1 is formed, atone side, with a lon tudinall extending opening 5', the opposite sides of said opening being sharpened to constitute cutting edges 6. v

Rotatably mounted in the housing 1 is a cutting element 7. Said cutting element is of tubular cylindrical form, the same being formed wlth spaced transversely extending slots 8 which result in the formation of diametric connecting portions '9, the terminal edges 10 ofthe portions 9 constituting cutting edges which are flush with the Specification of Letters Patent.

Application filed May 20, 191% Serialjto. 98,988.

Patented Dec. 26, 1916.

periphery of the member .7 as clearly shown in Fig. 4:. The narrow ribs or flanges 11 which intervene the slots 8 constitute circular guards adapted, when the device is in use, to prevent cutting of the skin, as might otherwise result. The cutting edges 10 at opposite sides of the cutting element are in staggered relation so that each cutting ed e overlaps circumferentially with one of t e guard portions 11. This being so, in the use of the device, the entire surface engaged by the device, will be traversed by the cutting edges 10, no part being left untouched, as would .otherwise result were the cutting edges at opposite sides of the device in circumferential alinement, since in this case, the portions of the skin contacting with the guards 11 would not be traversed by the cutting edges. Also, the cutting edges 10 are circumferentiall spaced or stepped around the cutting e ement so that the various cutting edges will be successively brought into operative position and thus the pull upon the skin and pressure upon the driving element connected with the member 7, relieved and distributed.

If desired, the cutting element may be in the form shown in Figs. 7 and 8, in which case said element 7 is formed with transversely-extending slots 8, each slot resulting in the formation of but a single cutting edge-forming portion 9, with the cutting edges 10 provided at the ends thereof, as shown in Fig. 8. The outer end of the cutting element is closed by a threaded plug 12, the inner end of said cutting element being open. Said inner end is connected by a flexible shaft 13 in the form of a comparatively heavy helical spring, with one end of a driving element 14 which is rotatably mounted in the bearing 15 of housing section 3, said member 14 being locked against longitudinal movement in the member 15 by means of a collar 16. The rearward end of member 14 is adapted for connection, through the medium of a flexible shaft 17, with a motor or other desired driving means employed in connection with the device. The lon 'tudinal passage which is formed in the cuttmg element 7 communicates, as seen, with the passage through the flexible shaft 13, the latter passage terminating in the cup-formed forward end of member 14. The latter is-provided with openings 18 which are in open communication, as seen, with an outlet nipple 19 on the housing member 3 which is adapted for connection with a ration of the latter, will be drawn into the suction tube used in connection with the device. With this arrangement, the hair which is removed by the device, during the operinterior of thecutting element 7 whence the same will be drawn through the flexible shaft 13 into member 14, andthence through openings 18 out through the discharge or outlet nipple 19 I In the operation of the device, it is of course apparent, that the cutting edges 10 coiiperate with the cutting edges 6 of the housing 1, the result being a sort of clipping action. The cutting element may be rotated in either direction, the cutting edges 10 facing circumferentially in one direction cooperatingwith one oi the cutting edges 6,

mg my invention into effect, these are ca- 7 I pable of variation and modification without departing from the spirit of the invention.

, I, therefore, do not wish to be limited 'tothe precise details of construction set forth, but desire to avail myself'of such variations and modifications; as come within the scope of the appended claims.

Havmgdescribed my invention what I claim as new and desire to secure by Letters Patent is: v

1. A rotary. cutting element comprising aplurality of-longitu'dinally spaced cutting edges; and guards .interposed between said cutting edges, substantially as described;

' 2. A rotary cutting element comprising a plurality of longitudinally spaced cutting edges; and circular guards interposed between said cutting edges, substantially as described.

3. A rotary cutting element comprising a plurality of longitudinally spaced cuttmg- ..entia lly'w1th one of said guards,

edges; and circular guards interposed '-between said cutting edges and having their peripheries substantia ly flush with said cuttmg'edges, substantially as described. 4. A rotary cutting element comprising a plurality of longitudinally extending cutting edges; and circular guards interposed-v between said cutting ed saidcutting edges being longitudina y and circumferentially spaced, and each of said cuttingv edges being positioned to overlap circumferan-r tially as described. 4 I

-5. A rota ctting' element comprising ngitudinally extending cutcircular: guards interposed. betweensaid cutting]; edges, said" cutting x aal ns extending cuttin rally and circ rsaid guards, whereby each of said cutting edges overlaps circumferentiallywith one of said guards, substantially as described.

6. A rotary cutting element comprising a plurality of longitudinally spaced cutting edges; and guards interposed between said cutting edges, there being a passage leading from said cutting edges through the interior of said element, substantially as described. V p 7. A rotary cutting element comprising a cylindrical body, said body being transversely slotted to form longitudinally extending cutting edges at the periphery theres of; and intermediate circumferentially ex tending guard-forming portions g substan tially as described. s n

8. A rotary cutting element comprising a cylindrical tubular body, said body being transversely slotted to form longitudinally extending cutting edges at the periphery thereof; and intermediate circumferentially v extending guard-forming portions, substantially as described. f"

' 9. A rotary cutting element comprising a cylindrical body, said body being transversel, slotted to form diametric cutting edgeorming portions at the periphery thereof; and intermediate circumferentially extending guard-forming portions, substantially as described.'-- Y 10. A rotary cutting element comprising a cylindrical tubular bcdy, said body being transversely slotted to form longitudinally edges at the periphery thereof; interme ate circumferentially ex; tending guard-forming portions; and a clo-' sure' for one endof said cuttin element, the opposite end of said cutting e ement being open, substantially asdescribed.

' 11. A device of the class described comprising a rotary cutting element, said element comprising a pluralityof longitudinally spaced cutting edges; ards inter- 11o osed between said cutting .e ges; a housngembracing said cutting element; and

"cutting edges'on said housing for coiiperationwith the cutting edges of said cutting element, substantially as described. j

12. A device of the class described com-. prising a rotary cutting element-,said ele: ment comprising a plurality of longitudinally spaced cuttingi edgesziguards inter: posed between said cutting ges; a hous- 12c mg embracing said cutting element there being an openingat one side of said hensing for exposure, of said. cutting element; and cutting edges Lcon'stituted at opposite sides of sand openingior. cotiperation, with 125 the on edges o cuttingelement, substantiay ans-described. 't 13. A device of the cimnprising a housinghavin at; one side; a rotary cutting cement mounted in its ini a'eo said housing; a lurality of longitudinally spaced cutting e ges provided in said cutting element; guards interposed between said cutting edges; cutting edges on said housing at opposite sides of the opening therein; and a shaft rotatably mounted in said housing and having one end connected with said'cuttin element for rotating the same, substantia yas described.

14. A device of the class described comprising a housing having an opening at one side; a rotary cutting element mounted in said housing; a lurality of longitudinally spaced cutting e ges provided in said out tin element; guards interposed between cutting edges; cutting ed es on said housing at opposite sides of t e 0 enin therein; a shaft rotatablymounted in sai v housing and having one end connected with said cutting element for rotating the same, there being a assage formed in said cutting element and s aft leading from said cutting edges; and an outlet in said housing com- 15. A device of the class described comprising a housing having an opening at one side; a rotary cutting element mounted in said housing; a lurality of longitudinally spaced cutting e ges provided in said cutt1n element; guards interposed between sai cutting edges; cutting edges on said housing at opposite sides of the openin therein; a rotary drivin element mounte in said housing; and a exible shaft operatively connecting said driving element and said cutting element, substantially as described.

In testimony. whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSHUA H. Po'rrs, Hmrr F. Lmms. 

